John Stevenson is a Community Developer at Heroku & Salesforce and an active organiser of several communities in London. He runs workshops and speaks on technical topics including open source projects, developer tools, continuous delivery, TDD & BDD practices and declarative (functional) programming (Clojure). John also presents on kanban as a way to help individuals, teams and organisations become more effective. He is a strong advocate of group learning and encourages others to get involved with the community for their own personal growth. In his spare time, John likes to cycle quite a lot (200-400 km) on a weekend if he is not too busy learning.